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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Estimation of temperature fields in local tissues during intracavitary hyperthermia
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| | purpose:InordertoimprovethedffectofradiantionfoyNPCandreducethesideeffect,thegoodwayofhyperthermiaforNPCisstudiedandsomeusefulclinicaldataandexperiencesarecollected.MaterialsandMethods:Applicatorsof2450MHzand915MHzmicrowaveintracavityprobewereseparatelyinsertedintothePhantomsandthenasopharyngealcavitiesofNPCpatientsforheatingcombinedwith8MHzexternalRFelectrodes.Liquidcristaltestingandanti-radiomulti-pointmeasuringwereusedtodelerminethedistributionoftemperature.Results:(1)Whenthetemperaturewas45℃~48℃inthesur... | | 目的:提高鼻咽癌放疗效果及减轻副作用,寻找理想的鼻咽癌局部热疗的方法,并积累临床数据和经验。材料与方法:用两种微波腔内辐射器(2450MHz和915MHz),对肌肉体模和病人的鼻咽腔内加温,并用8MHz射频对鼻咽两侧作体外电容式透热加温,通过液晶膜感温试验和抗电磁波干扰的多点测温结果分析其热分布情况。结果:1.腔内粘膜45℃-48℃时,粘膜下3mm可达49:-50℃,体模的内腔表面50℃时有效加温深度为0.4cm-0.5cm(2450MHz),0.8cmm-1.0cm(915MHz)。8MH体外电容式透热则腔内未能达到有效治疗温度。2.对76例腔内热疗患考观察和临床测温提示人鼻咽腔内可耐受50℃左右,除局部微热和微痛外(停止加温即消失).未发现不可逆的组织损害。结论:经测试和临床验证,鼻咽癌用腔内热疗法是安全有效的,有临床应用价值。 | | 文摘来源 | | A phantom and patients with primary nasopharyngeal cancer were heated by use of 2450 MHz and 915 MHz microwave intracavity irradiation, and 8 MHz external diathermy. Through liquid crystal temperature testing and multipoint measurement of temperature, it was suggested that: 1) Intracavity heating was limited in the original focus, effective depth of intracavity hyperthermia was about 0. 5~1cm under the mucous membrane (The depth with 915 MHz was slightly more than that with 2450 MHz). Temperature felldown q... | | 运用2450和915MHz微波鼻咽腔内辐射器对肌肉体模和患者作鼻咽腔内加温,以及用8MHz射频对鼻咽部作体外电容式透热加温,通过液晶膜感温试验和抗电磁波干扰的多点测温结果分析认为①采用腔内加热法不管使用何种频率对鼻咽癌仍局限于腔内的原发灶热疗,具有一定的意义,其有效加温深度大约在粘膜下0.5至1cm左右。用915MHz比用2450MHz要稍深一些。对稍远离鼻咽腔的周围软组织浸润病灶加温则因热衰减快透深不够而升温不理想;②体外电容式透热加温则因骨骼的屏蔽使鼻咽腔内升温不理想,未能达到有效治疗温度,但不排除对周围软组织侵犯病例的治疗意义;③对几十例鼻咽癌腔内热疗患者观察(另文)和临床测温研究提示人鼻咽腔内的热耐受能力较强,一般可达50℃左右,患者感觉为温热感和轻微疼痛,耳内热痛感,少量病例有头晕或恶心症状均在停止加温后消失。到目前为止,并未发现热灼伤和不可逆的组织损害。 | | 文摘来源 | | [Purpose] To evaluate the tolerance, side effect, and local control rate for nasopharyngeal carcinoma(NPC) treated with radiotherapy combined with intracavity hyperthermia. [Methods] Microwave intracavity hyperthermia was applied once a week for 42 initial treated NPC cases, once a week from the first week of radiotherapy, 50 minutes each time with T90 42.5℃~43℃ for 4~7 times. Thermistor measurement system was used for real time monitor during hyperthermia. 6MV~10MV-X ray was used during radiotherapy. [Resu... | | [目的]探讨放射治疗联合腔内热疗治疗鼻咽肿瘤的耐受性、副反应和局部控制率。[方法]对42例首次治疗的鼻咽癌病例进行鼻咽腔内微波加热,每周1次,自放疗的第1周开始进行,每次持续50min,T90为42.5℃~43℃,共治疗4~7次,热敏电阻测量系统在治疗过程中全程实时监控,放射治疗采用6MV~10MV鄄X线常规照射。[结果]放射治疗联合腔内热疗治疗鼻咽癌的有效率为100%(CR95.2%,PR4.8%),肿瘤侵犯咽旁间隙者CR93.9%(31/33),鼻咽腔内肿瘤完全消退时的肿瘤剂量为32Gy~64Gy/16~32F,但急性重度黏膜反应(3~4级)发生率明显上升,达83.3%(35/42)。[结论]放射治疗联合腔内热疗治疗鼻咽癌能被患者所耐受,能改善局部控制率,尤其是能改善咽旁间隙受侵肿瘤的局部控制率。 | | 文摘来源 | |   | | << 更多相关文摘 |
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